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<head><meta charset="utf-8"><title>meeting 2021-02-17 · t-compiler/wg-rfc-2229 · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/index.html">t-compiler/wg-rfc-2229</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-02-17.html">meeting 2021-02-17</a></h3>

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<a name="226568825"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-02-17/near/226568825" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-02-17.html#226568825">(Feb 16 2021 at 20:06)</a>:</h4>
<p>Hey <span class="user-mention" data-user-id="281950">@Aman Arora</span> -- tomorrow I'd like to discuss 'milestones' and dates a bit. I'm trying to setup my overall tracking for the remainder of the year of what I hope to get done and by when.</p>



<a name="226568937"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-02-17/near/226568937" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-02-17.html#226568937">(Feb 16 2021 at 20:07)</a>:</h4>
<p>I guess that the milestones for this project are something like</p>
<ul>
<li>Nightly implementation is feature complete (getting close, I think)</li>
<li>Migrations are feature complete</li>
<li>Migrations are tested in a crater run</li>
<li>Stabilized for the new edition in nightly</li>
</ul>



<a name="226568959"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-02-17/near/226568959" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-02-17.html#226568959">(Feb 16 2021 at 20:07)</a>:</h4>
<p>We could even create proper github milestones for that</p>



<a name="226568969"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-02-17/near/226568969" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-02-17.html#226568969">(Feb 16 2021 at 20:07)</a>:</h4>
<p>Are there other stages that you can think of?</p>



<a name="226572032"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-02-17/near/226572032" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aman Arora <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-02-17.html#226572032">(Feb 16 2021 at 20:30)</a>:</h4>
<blockquote>
<p>Migrations are tested in a crater run</p>
</blockquote>
<p>I'm assuming this includes a possible increase in the closure size, auto traits, clone etc?</p>



<a name="226572093"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-02-17/near/226572093" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-02-17.html#226572093">(Feb 16 2021 at 20:31)</a>:</h4>
<p>ah</p>



<a name="226572101"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-02-17/near/226572101" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-02-17.html#226572101">(Feb 16 2021 at 20:31)</a>:</h4>
<p>I forgot about that</p>



<a name="226572121"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-02-17/near/226572121" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-02-17.html#226572121">(Feb 16 2021 at 20:31)</a>:</h4>
<p>that could be the same crater run, or we could make distinct milestones for that</p>



<a name="226572212"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-02-17/near/226572212" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aman Arora <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-02-17.html#226572212">(Feb 16 2021 at 20:32)</a>:</h4>
<p>I think we might want to do the closure size separate from the rest</p>



<a name="226572702"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-02-17/near/226572702" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-02-17.html#226572702">(Feb 16 2021 at 20:36)</a>:</h4>
<p>agreed, it feels distinct to me</p>



<a name="226572733"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-02-17/near/226572733" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-02-17.html#226572733">(Feb 16 2021 at 20:36)</a>:</h4>
<ul>
<li>Nightly implementation is feature complete (getting close, I think)</li>
<li>Migrations are feature complete</li>
<li>Migrations are tested in a crater run</li>
<li>Closure size is measured in a crater run</li>
<li>Stabilized for the new edition in nightly</li>
</ul>



<a name="226572992"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-02-17/near/226572992" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aman Arora <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-02-17.html#226572992">(Feb 16 2021 at 20:38)</a>:</h4>
<p>Where would optimizations come in, if we have to after the closure size experiment? Is it like a feedback loop milestone, fix-test until threshold metrics met, or do we want to state that more explicitly? Otherwise looks good</p>



<a name="226725351"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-02-17/near/226725351" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aman Arora <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-02-17.html#226725351">(Feb 17 2021 at 21:04)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> ping</p>



<a name="226725632"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-02-17/near/226725632" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-02-17.html#226725632">(Feb 17 2021 at 21:06)</a>:</h4>
<p><span class="user-mention" data-user-id="281950">@Aman Arora</span> sorry!</p>



<a name="226725636"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-02-17/near/226725636" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-02-17.html#226725636">(Feb 17 2021 at 21:06)</a>:</h4>
<p>I'm here now</p>



<a name="226725716"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-02-17/near/226725716" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Aman Arora <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-02-17.html#226725716">(Feb 17 2021 at 21:07)</a>:</h4>
<p>Are Roxane and I in the wrong zoom room?</p>



<a name="226725721"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/189812-t-compiler/wg-rfc-2229/topic/meeting%202021-02-17/near/226725721" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/189812-t-compiler/wg-rfc-2229/topic/meeting.202021-02-17.html#226725721">(Feb 17 2021 at 21:07)</a>:</h4>
<p>No</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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